|HST SM4 STIS Repair EVA - NASA Goddard Space Flight Center|
Space Telescope Imaging Spectrograph (STIS), the most versatile spectrograph ever to fly on Hubble, ceased operations in August 2004 due to failure of its power supply. In order to restore STIS to operational status, astronauts may attempt an on-orbit replacement of one electronics board inside one of its main electronics boxes. The Cosmic Origins Spectrograph (COS) that will be added during Servicing Mission 4, and STIS are highly complementary and would work effectively together to provide a f...
Keywords: Hubble Space Telescope, HST, SM4, Servicing Mission 4, Advance Camera for Surveys, EVA; What -- Hubble Space Telescope (HST)
|HST SM4 ACS Repair EVA - NASA Goddard Space Flight Center|
Advanced Camera for Surveys (ACS) produced many of the most popular and dramatic images from the Hubble Space Telescope over the last few years, but in January 2007 the instrument had a serious power failure which caused the three observing channels, the Wide Field Channel, The Solar Blind Channel and the High Resolution channel, to cease operation. The Solar Blind Channel was returned to service in February 2007...
Keywords: Hubble Space Telescope, HST, SM4, Servicing Mission 4, Advance Camera for Surveys, EVA; What -- Advanced Camera for Surveys; What -- Hubble Space Telescope (HST)